diff --git a/pmt-app/package.json b/pmt-app/package.json
index 2c8fef1..5fd1aa8 100644
--- a/pmt-app/package.json
+++ b/pmt-app/package.json
@@ -29,7 +29,7 @@
     "i18next": "^8.4.3",
     "i18next-browser-languagedetector": "^2.2.4",
     "immutability-helper": "^2.2.0",
-    "node-sass": "^4.12.0",
+    "node-sass": "^4.13.1",
     "react": "^15.5.4",
     "react-addons-css-transition-group": "^15.5.2",
     "react-addons-transition-group": "^15.5.2",
diff --git a/pmt-app/yarn.lock b/pmt-app/yarn.lock
index 06da3ab..21109cf 100644
--- a/pmt-app/yarn.lock
+++ b/pmt-app/yarn.lock
@@ -2368,15 +2368,10 @@ lodash.unset@^4.5.2:
   resolved "https://registry.yarnpkg.com/lodash.unset/-/lodash.unset-4.5.2.tgz#370d1d3e85b72a7e1b0cdf2d272121306f23e4ed"
   integrity sha1-Nw0dPoW3Kn4bDN8tJyEhMG8j5O0=
 
-lodash@^4.0.0, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.2.1, lodash@^4.3.0, lodash@^4.6.1:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
-  integrity sha1-eCA6TRwyiuHYbcpkYONptX9AVa4=
-
-lodash@^4.17.11, lodash@~4.17.10:
-  version "4.17.13"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.13.tgz#0bdc3a6adc873d2f4e0c4bac285df91b64fc7b93"
-  integrity sha512-vm3/XWXfWtRua0FkUyEHBZy8kCPjErNBT9fJx8Zvs+U6zjqPbTUOpkaoum3O5uiA8sm+yNMHXfYkTUHFoMxFNA==
+lodash@^4.0.0, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.17.15, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.2.1, lodash@^4.3.0, lodash@^4.6.1, lodash@~4.17.10:
+  version "4.17.20"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
+  integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
 
 loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.2.0, loose-envify@^1.3.1:
   version "1.3.1"
@@ -2557,10 +2552,10 @@ node-gyp@^3.8.0:
     tar "^2.0.0"
     which "1"
 
-node-sass@^4.12.0:
-  version "4.12.0"
-  resolved "https://registry.yarnpkg.com/node-sass/-/node-sass-4.12.0.tgz#0914f531932380114a30cc5fa4fa63233a25f017"
-  integrity sha512-A1Iv4oN+Iel6EPv77/HddXErL2a+gZ4uBeZUy+a8O35CFYTXhgA8MgLCWBtwpGZdCvTvQ9d+bQxX/QC36GDPpQ==
+node-sass@^4.13.1:
+  version "4.13.1"
+  resolved "https://registry.yarnpkg.com/node-sass/-/node-sass-4.13.1.tgz#9db5689696bb2eec2c32b98bfea4c7a2e992d0a3"
+  integrity sha512-TTWFx+ZhyDx1Biiez2nB0L3YrCZ/8oHagaDalbuBSlqXgUPsdkUSzJsVxeDO9LtPB49+Fh3WQl3slABo6AotNw==
   dependencies:
     async-foreach "^0.1.3"
     chalk "^1.1.1"
@@ -2569,7 +2564,7 @@ node-sass@^4.12.0:
     get-stdin "^4.0.1"
     glob "^7.0.3"
     in-publish "^2.0.0"
-    lodash "^4.17.11"
+    lodash "^4.17.15"
     meow "^3.7.0"
     mkdirp "^0.5.1"
     nan "^2.13.2"